docs: def plot(self, lax=None, proj='all', element='PIBsBvV',
               dP=None, dI=_def.TorId, dBs=_def.TorBsd, dBv=_def.TorBvd,
               dVect=_def.TorVind, dIHor=_def.TorITord, dBsHor=_def.TorBsTord,
               dBvHor=_def.TorBvTord, Lim=None, Nstep=_def.TorNTheta,
               dLeg=_def.TorLegd, indices=False,
               draw=True, fs=None, wintit=None, Test=True):
          """ Plot the polygon defining the vessel, in chosen projection
  
          Generic method for plotting the Ves object
          The projections to be plotted, the elements to plot can be specified
          Dictionaries of properties for each elements can also be specified
          If an ax is not provided a default one is created.
  
          Parameters
          ----------
          Lax :       list or plt.Axes
              The axes to be used for plotting
              Provide a list of 2 axes if proj='All'
              If None a new figure with axes is created
          proj :      str
              Flag specifying the kind of projection
                  - 'Cross' : cross-section projection
                  - 'Hor' : horizontal projection
                  - 'All' : both
                  - '3d' : a 3d matplotlib plot
          element :   str
              Flag specifying which elements to plot
              Each capital letter corresponds to an element:
                  * 'P': polygon
                  * 'I': point used as a reference for impact parameters
                  * 'Bs': (surfacic) center of mass
                  * 'Bv': (volumic) center of mass for Tor type
                  * 'V': vector pointing inward perpendicular to each segment
          dP :        dict / None
              Dict of properties for plotting the polygon
              Fed to plt.Axes.plot() or plt.plot_surface() if proj='3d'
          dI :        dict / None
              Dict of properties for plotting point 'I' in Cross-section projection
          dIHor :     dict / None
              Dict of properties for plotting point 'I' in horizontal projection
          dBs :       dict / None
              Dict of properties for plotting point 'Bs' in Cross-section projection
          dBsHor :    dict / None
              Dict of properties for plotting point 'Bs' in horizontal projection
          dBv :       dict / None
              Dict of properties for plotting point 'Bv' in Cross-section projection
          dBvHor :    dict / None
              Dict of properties for plotting point 'Bv' in horizontal projection
          dVect :     dict / None
              Dict of properties for plotting point 'V' in cross-section projection
          dLeg :      dict / None
              Dict of properties for plotting the legend, fed to plt.legend()
              The legend is not plotted if None
          Lim :       list or tuple
              Array of a lower and upper limit of angle (rad.) or length for
              plotting the '3d' proj
          Nstep :     int
              Number of points for sampling in ignorable coordinate (toroidal angle or length)
          draw :      bool
              Flag indicating whether the fig.canvas.draw() shall be called automatically
          a4 :        bool
              Flag indicating whether the figure should be plotted in a4 dimensions for printing
          Test :      bool
              Flag indicating whether the inputs should be tested for conformity
  
          Returns
          -------
          La          list / plt.Axes
              Handles of the axes used for plotting (list if several axes where used)
  
          """
          kwdargs = locals()
          lout = ['self']
          for k in lout:
              del kwdargs[k]
          return _plot.Struct_plot(self, **kwdargs)